20966579737530 has 64 divisors (see below), whose sum is σ = 57761673799680. Its totient is φ = 4771249349184.

The previous prime is 20966579737529. The next prime is 20966579737549. The reversal of 20966579737530 is 3573797566902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219866110 + ... + 219961449.

It is an arithmetic number, because the mean of its divisors is an integer number (902526153120).

Almost surely, 2^{20966579737530} is an apocalyptic number.

20966579737530 is an abundant number, since it is smaller than the sum of its proper divisors (36795094062150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20966579737530 is a wasteful number, since it uses less digits than its factorization.

20966579737530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439827803.

The product of its (nonzero) digits is 450084600, while the sum is 69.

The spelling of 20966579737530 in words is "twenty trillion, nine hundred sixty-six billion, five hundred seventy-nine million, seven hundred thirty-seven thousand, five hundred thirty".